53 lines
1.4 KiB
PHP
53 lines
1.4 KiB
PHP
<?php
|
|
|
|
require_once('library/ASNValue.class.php');
|
|
|
|
function DerToPem($Der, $Private=false)
|
|
{
|
|
//Encode:
|
|
$Der = base64_encode($Der);
|
|
//Split lines:
|
|
$lines = str_split($Der, 65);
|
|
$body = implode("\n", $lines);
|
|
//Get title:
|
|
$title = $Private? 'RSA PRIVATE KEY' : 'PUBLIC KEY';
|
|
//Add wrapping:
|
|
$result = "-----BEGIN {$title}-----\n";
|
|
$result .= $body . "\n";
|
|
$result .= "-----END {$title}-----\n";
|
|
|
|
return $result;
|
|
}
|
|
|
|
function pkcs8_encode($Modulus,$PublicExponent) {
|
|
//Encode key sequence
|
|
$modulus = new ASNValue(ASNValue::TAG_INTEGER);
|
|
$modulus->SetIntBuffer($Modulus);
|
|
$publicExponent = new ASNValue(ASNValue::TAG_INTEGER);
|
|
$publicExponent->SetInt($PublicExponent);
|
|
$keySequenceItems = array($modulus, $publicExponent);
|
|
$keySequence = new ASNValue(ASNValue::TAG_SEQUENCE);
|
|
$keySequence->SetSequence($keySequenceItems);
|
|
//Encode bit string
|
|
$bitStringValue = $keySequence->Encode();
|
|
$bitStringValue = chr(0x00) . $bitStringValue; //Add unused bits byte
|
|
$bitString = new ASNValue(ASNValue::TAG_BITSTRING);
|
|
$bitString->Value = $bitStringValue;
|
|
//Encode body
|
|
$bodyValue = "\x30\x0d\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00" . $bitString->Encode();
|
|
$body = new ASNValue(ASNValue::TAG_SEQUENCE);
|
|
$body->Value = $bodyValue;
|
|
//Get DER encoded public key:
|
|
$PublicDER = $body->Encode();
|
|
return $PublicDER;
|
|
}
|
|
|
|
|
|
function metopem($m,$e) {
|
|
$der = pkcs8_emcode($m,$e);
|
|
$key = DerToPem($der,true);
|
|
return $key;
|
|
}
|
|
|
|
|